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BITSAT 2017
Exam
BITSAT
Year
2017
Subject
Mathematics
Chapter
Area Under Curves

BITSAT 2017 · Mathematics · Area Under Curves

The area enclosed by the curves y = x^ 3 and y = x is

The area enclosed by the curves y=x3y = x^{3} and y=xy = \sqrt{x} isThe area enclosed by the curves y = x^ 3 and y = x is

Options

  1. A53squnits\dfrac{5}{3}squnits
  2. B54squnits\dfrac{5}{4}squnits
  3. C512squnits\dfrac{5}{12}squnits
  4. D125squnits\dfrac{12}{5}squnits

Correct answer

C. 512squnits\dfrac{5}{12}squnits

Step-by-step solution

Since, the intersection of two curves

y=x3y = x^{3} and y=xy = \sqrt{x} are x=0x = 0 and x=1x = 1

The area enclosed by the curves y = x^ 3 and y = x is

∴A=∣∫01(x3−x)dx∣=∣x44−2x3/2301∣∴ A = \left|{∫}_{0}^{1}\left(x^{3} - \sqrt{x}\right)dx\right| = \left|{\dfrac{x4}{4} - \dfrac{2x^{3 / 2}}{3}}_{0}^{1}\right|

=∣[14−23]∣=512squnits= \left|\left[\dfrac{1}{4} - \dfrac{2}{3}\right]\right| = \dfrac{5}{12}squnits

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